RegiStax

Free image processing
software

RegiStax
5.1: New features (White Balance)

Thusfar RegiStax had a way to set the colour-balance using the RGB-Balance function from the waveletpage.
After loading an image with a clear colourcast the RGB-panel would look like this.

This shows the difference between the old whitebalance (left) and the
new one (right). Clearly the colourcast has been removed a lot better.
Next to this default AutoBalance function RegiStax also has another way
to estimate whitebalance. You move the cursor to an area of the image
that should be bright grey or white. When above that area (at the
waveletpage) press ALT and the left-mousebutton. The result of pointing
the cursor on the middle of one of the bright white bands and pressing
Alt-LeftMouse created the estimate below on the left and the original
frame on the right.